A team of engineers at the University of Colorado Boulder (Boulder, Co,USA; www.colorado.edu) has designed a new class of tiny, self-driven robots capable of moving incredibly fast through liquid. 

This innovation might pave the way for transporting prescription drugs to hard-to-access regions within the human body in the future. 

The size of these microrobots is remarkably small, each only 20 micrometers wide, which is several times tinier than the diameter of a human hair. Additionally, they possess astonishing speed, reaching about 3 millimeters per second or roughly 9,000 times their length per minute, outpacing a cheetah in relative terms.

lmage: Microrobot seen under a scanning electron microscope (Photocourtesy of Shields Lab)